architecture-v2 / db-design-v2 / three-layer-model / design-v2 顶部加「代码漂移修订」区块:
Platform→Host(hostId)、AI Gateway/Dify→AiCall 多 provider、post_treatment_recall→
treatment_initiation/aftercare_recall、plan_summaries 3→4 type、persona 4→16 feature。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>